CN102617091A - Machine-made sand self-leveling concrete - Google Patents
Machine-made sand self-leveling concrete Download PDFInfo
- Publication number
- CN102617091A CN102617091A CN2012100942329A CN201210094232A CN102617091A CN 102617091 A CN102617091 A CN 102617091A CN 2012100942329 A CN2012100942329 A CN 2012100942329A CN 201210094232 A CN201210094232 A CN 201210094232A CN 102617091 A CN102617091 A CN 102617091A
- Authority
- CN
- China
- Prior art keywords
- machine
- parts
- concrete
- leveling concrete
- sand self
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
The invention discloses machine-made sand self-leveling concrete, which comprises the following components in parts by mass: 100 parts of cement, 40-60 parts of fly ash, 20-40 parts of mineral powder, 0.5-3 parts of polycarboxylic water reducer, 3-8 parts of expanding agent, 0.0004-0.02 parts of anti-foaming agent, 0.0006-0.01 parts of air entraining agent, 3-8 parts of polyacrylamide, 250-350 parts of machine-made sand, 250-350 parts of gravels and 50-80 parts of water. According to the concrete, the working performance of the machine-made sand self-leveling concrete is improved by using flow performance and a thickening effect of the polyacrylamide. The shrinkage of the machine-made sand self-leveling concrete is reduced by combining the water entraining performance of the polyacrylamide with use of the sulphoaluminate type expanding agent. The polyacrylamide is used as a flexible intermediate in hardened concrete, so that the internal stress of the concrete is relieved, and the anti-crack performance of the concrete is improved. No silica fume is used in the concrete, so that the physical health of the operating personnel is guaranteed.
Description
Technical field
The present invention relates to building material field, particularly a kind of machine-processed sand preparation self-leveling concrete.
Background technology
Self-leveling concrete is when building, can lean on self gravitation need not vibrate (or vibrating a little) and reach the concrete from levelling, closely knit moulding.It has good flowability, education resistance, fillibility and good reinforcing bar gap through performance, and good mechanical performance and endurance quality, reduces, and prevents structure segregation and the quality accident being not good at occurring because of vibrating.
Self-leveling concrete mainly solves the contradiction of mobile and separating resistance, thereby improves concrete gap handling capacity and fillibility when preparation.Therefore, when practical application, self-leveling concrete is furnished with very high requirement to the particle particle shape and the physical level of various materials.Compare with the self-leveling concrete material of routine, machine-processed sand often has that grain composition is bad, particle is coarse, multi-angular, defectives such as surface-area is big, content of stone powder height.Therefore, when the machine-processed sand self-leveling concrete of preparation, need take big volume to use mineral admixture and superplasticizer just can reach construction requirement usually.
Yet big volume uses mineral admixture can further reduce Ca (OH) in the concrete
2Concentration, if concrete anti-permeability performance is poor, CO
2Get into inside concrete easily Deng the environment hazardous medium, cause concrete carbonization, steel bar corrosion.And big volume uses mineral admixture to increase the gel content in the concrete, has increased concrete contraction to a certain extent, and the risk of concrete cracking is further strengthened.
Summary of the invention
To the deficiency of above-mentioned prior art, the technical problem that the present invention will solve provides a kind of machine-processed sand self-leveling concrete that can improve anti-carbonization of machine-made sand concrete and shrinkage.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of machine-processed sand self-leveling concrete, it comprises by mass parts:
100 parts of cement,
Flyash 40-60 part,
Breeze 20-40 part,
Polycarboxylate water-reducer 0.5-3 part,
Swelling agent 3-8 part,
Skimmer 0.0004-0.02 part,
Air entrapment agent 0.0006-0.01 part,
SEPIGEL 305 3-8 part,
Mechanism sand 250-350 part,
Rubble 250-350 part.
Water 50-80 part
Preferably, said cement is PO42.5R type cement.
Preferably, said flyash is I level flyash.
Preferably, said breeze is a S95 level shrend GBFS.
Preferably, said polycarboxylate water-reducer is the mixture of polyester and polyethers, and both ratios of quality and the number of copies are 2: 8, and solid content is 20%.
Preferably, said swelling agent is a sulplo-aluminate class swelling agent.
Preferably, said skimmer is silicone based skimmer.
Preferably, said air entrapment agent is the triterpenoid saponin air entrapment agent.
Preferably, the molecular weight ranges of said SEPIGEL 305 is 10000-80000.
Preferably, said machine-processed grain fineness number modulus is 2.4-2.9, and powder containing quantity is 8-15%.。
Preferably, said rubble is the rubble of 5-20mm.
Preferably, said water is commercially available tap water.
Technique scheme has following beneficial effect: this mechanism sand self-leveling concrete adopts high molecular weight water soluble polymer SEPIGEL 305 (PAM) to improve the performance of machine-made sand concrete.PAM can reduce the frictional resistance between the liquid, can increase the flowing property of self-leveling concrete, and certain thickening power is arranged, and can increase the glutinous performance of gathering of self-leveling concrete.Multivalence particle Ca in PAM and the cement slurry
2+And Al
3+The ionic linkage compound that generates that interacts arrives even rubber-like solid for the heavy-gravity gel; Be connected, be wrapped to form each other incomplete successive with cement matrix jointly, fill closely knit spatial skeleton reticulate body architecture; Improved the concrete hardening body physical organization's structure, strengthened concrete compactness; And having increased concrete snappiness to a certain extent, internal stress provides the space in the concrete in order to alleviate.
In process for preparation, use sulplo-aluminate class swelling agent to reduce concrete contraction; Sulplo-aluminate class swelling agent just has bulking effect under the competent situation of moisture; When dehydration is serious, can aggravate to shrink; PAM has sealed the passage of moisture evaporation in concrete, making has suff water to impel swelling agent normally to play a role in the concrete.
When selecting water reducer for use; Adopting polyester and polyethers admixture to mix uses; In ratio is 2: 8 o'clock, and it is best that its water-reducing rate, slump retaining and flowability all reach, but concrete air content increases too much when mixing use; Therefore in process for preparation with the harmful bubble in the silicone based skimmer elimination concrete, and with the triterpenoid saponin air entrapment agent cause uniformly, quality preferably bubble improve concrete performance.
Embodiment
In following embodiment, if no special instructions, be mass parts.
Embodiment one
With 100 parts of cement, 40 parts in flyash, 30 parts of breezes, 2 parts of polycarboxylate water-reducers, 5 parts of swelling agents, 0.002 part of skimmer, 0.001 part of air entrapment agent, 5 parts of SEPIGEL 305s, 320 parts in machine-processed sand, 320 parts of rubbles, water mixes stirring for 65 parts.
Above-mentioned cement is PO42.5R type cement, and flyash is I level flyash, and breeze is a S95 level shrend GBFS, and polycarboxylate water-reducer is the mixture of polyester and polyethers, and both ratios of quality and the number of copies are 2: 8, and solid content is 20%.Swelling agent is a sulplo-aluminate class swelling agent, and skimmer is silicone based skimmer, and air entrapment agent is the triterpenoid saponin air entrapment agent.The molecular weight ranges of SEPIGEL 305 is 10000-80000, and machine-processed grain fineness number modulus is 2.4-2.9, and powder containing quantity is 8-15%.Rubble is the rubble of 5-20mm, and water is commercially available tap water.
Mixture goes out the machine performance: go out the machine slump (mm): 250
Divergence (mm): 800
1h through the time slump (mm): 250
Divergence (mm): 750
Maturing 28d intensity is 43.2Mpa.
Embodiment two
With 100 parts of cement, 50 parts in flyash, 30 parts of breezes, 2 parts of polycarboxylate water-reducers, 6 parts of swelling agents, 0.002 part of skimmer, 0.001 part of air entrapment agent, 5 parts of SEPIGEL 305s, 330 parts in machine-processed sand, 330 parts of rubbles, water mixes stirring for 68 parts.
Above-mentioned cement is PO42.5R type cement, and flyash is I level flyash, and breeze is a S95 level shrend GBFS, and polycarboxylate water-reducer is the mixture of polyester and polyethers, and both ratios of quality and the number of copies are 2: 8, and solid content is 20%.Swelling agent is a sulplo-aluminate class swelling agent, and skimmer is silicone based skimmer, and air entrapment agent is the triterpenoid saponin air entrapment agent.The molecular weight ranges of SEPIGEL 305 is 10000-80000, and machine-processed grain fineness number modulus is 2.4-2.9, and powder containing quantity is 8-15%.Rubble is the rubble of 5-20mm, and water is commercially available tap water.
Mixture goes out the machine performance: go out the machine slump (mm): 240
Divergence (mm): 800
1h through the time slump (mm): 240
Divergence (mm): 750
Maturing 28d intensity is 43.3Mpa.
Embodiment three
With 100 parts of cement, 60 parts in flyash, 40 parts of breezes, 2.5 parts of polycarboxylate water-reducers, 6 parts of swelling agents, 0.002 part of skimmer, 0.001 part of air entrapment agent, 6 parts of SEPIGEL 305s, 350 parts in machine-processed sand, 350 parts of rubbles, water mixes stirring for 75 parts.
Above-mentioned cement is PO42.5R type cement, and flyash is I level flyash, and breeze is a S95 level shrend GBFS, and polycarboxylate water-reducer is the mixture of polyester and polyethers, and both ratios of quality and the number of copies are 2: 8, and solid content is 20%.Swelling agent is a sulplo-aluminate class swelling agent, and skimmer is silicone based skimmer, and air entrapment agent is the triterpenoid saponin air entrapment agent.The molecular weight ranges of SEPIGEL 305 is 10000-80000, and machine-processed grain fineness number modulus is 2.4-2.9, and powder containing quantity is 8-15%.Rubble is the rubble of 5-20mm, and water is commercially available tap water.
Mixture goes out the machine performance: go out the machine slump (mm): 250
Divergence (mm): 850
1h through the time slump (mm): 250
Divergence (mm): 800
Maturing 28d intensity is 44.3Mpa.
The present invention adopts high molecular weight water soluble polymer SEPIGEL 305 (PAM) to improve the performance of machine-made sand concrete.Utilize the flowing property of SEPIGEL 305 and the serviceability that thickening power improves machine-processed sand self-leveling concrete (mobile and glutinous gathering property).Utilize the water retention property of SEPIGEL 305 to be used in combination the contraction that sulplo-aluminate class swelling agent reduces machine-processed sand self-leveling concrete.And SEPIGEL 305 serves as flexible intermediate body in maturing, alleviates concrete internal stress, has improved concrete resistance to cleavage.When using superplasticizer, adopting disappears the earlier microvoid structure in the concrete that afterwards drawn process improving has promoted concrete workability and weather resistance.
More than a kind of machine-processed sand self-leveling concrete that the embodiment of the invention provided has been carried out detailed introduction; For one of ordinary skill in the art, according to the thought of the embodiment of the invention, part all can change on embodiment and range of application; In sum; This description should not be construed as limitation of the present invention, is allly made any change with design philosophy of the present invention, all within protection scope of the present invention.
Claims (11)
1. a machine-processed sand self-leveling concrete is characterized in that it comprises by mass parts: 100 parts of cement, flyash 40-60 part; Breeze 20-40 part, polycarboxylate water-reducer 0.5-3 part, swelling agent 3-8 part; Skimmer 0.0004-0.02 part, air entrapment agent 0.0006-0.01 part, SEPIGEL 305 3-8 part; Mechanism sand 250-350 part, rubble 250-350 part, water 50-80 part.
2. machine-processed sand self-leveling concrete according to claim 1 is characterized in that: said cement is PO42.5R type cement.
3. machine-processed sand self-leveling concrete according to claim 1 is characterized in that: said flyash is I level flyash.
4. machine-processed sand self-leveling concrete according to claim 1 is characterized in that: said breeze is a S95 level shrend GBFS.
5. machine-processed sand self-leveling concrete according to claim 1 is characterized in that: said polycarboxylate water-reducer is the mixture of polyester and polyethers, and both ratios of quality and the number of copies are 2: 8, and solid content is 20%.
6. machine-processed sand self-leveling concrete according to claim 1 is characterized in that: said swelling agent is a sulplo-aluminate class swelling agent.
7. machine-processed sand self-leveling concrete according to claim 1 is characterized in that: said skimmer is silicone based skimmer.
8. machine-processed sand self-leveling concrete according to claim 1 is characterized in that: said air entrapment agent is the triterpenoid saponin air entrapment agent.
9. machine-processed sand self-leveling concrete according to claim 1 is characterized in that: the molecular weight ranges of said SEPIGEL 305 is 10000-80000.
10. machine-processed sand self-leveling concrete according to claim 1 is characterized in that: said machine-processed grain fineness number modulus is 2.4-2.9, and powder containing quantity is 8-15%.
11. machine-processed sand self-leveling concrete according to claim 1 is characterized in that: said rubble is the rubble of 5-20mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100942329A CN102617091A (en) | 2012-04-01 | 2012-04-01 | Machine-made sand self-leveling concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100942329A CN102617091A (en) | 2012-04-01 | 2012-04-01 | Machine-made sand self-leveling concrete |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102617091A true CN102617091A (en) | 2012-08-01 |
Family
ID=46557366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100942329A Pending CN102617091A (en) | 2012-04-01 | 2012-04-01 | Machine-made sand self-leveling concrete |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102617091A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103102125A (en) * | 2013-01-25 | 2013-05-15 | 同济大学 | Manufactured sand underwater dispersion resistant concrete and preparation method thereof |
| CN103232710A (en) * | 2013-05-02 | 2013-08-07 | 中国铁道科学研究院金属及化学研究所 | Emulsified asphalt for CRTS I and CRTS II slab ballastless tracks and preparation method of emulsified asphalt |
| CN103288398A (en) * | 2013-05-15 | 2013-09-11 | 宁波市高等级公路建设指挥部 | High-performance machine-made sand marine concrete and preparation method thereof |
| CN103342522A (en) * | 2013-07-18 | 2013-10-09 | 江苏广亚建材有限公司 | Cracking resisting concrete |
| CN104150829A (en) * | 2014-08-02 | 2014-11-19 | 四川华构住宅工业有限公司 | Self-leveling concrete and application method thereof |
| CN105254242A (en) * | 2015-09-28 | 2016-01-20 | 沈阳建筑大学 | C30 temperature shrinkage cracking-resistant steam-curing concrete, and preparation method thereof |
| CN106116325A (en) * | 2016-06-15 | 2016-11-16 | 焦作市强耐建材有限公司 | A kind of floor heating is filled with lightweight self-leveling material and preparation method thereof |
| CN106517965A (en) * | 2014-08-27 | 2017-03-22 | 胡妍 | Water-retaining anti-cracking type concrete |
| CN108178554A (en) * | 2017-12-04 | 2018-06-19 | 张芸 | A kind of preparation method of concrete anti-cracking agent |
| CN109455992A (en) * | 2019-01-12 | 2019-03-12 | 武汉中阳明建材有限公司 | A kind of machine-made sand concrete and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1074426A (en) * | 1993-02-23 | 1993-07-21 | 何庆林 | Superfluid state concrete |
| CN1193002A (en) * | 1997-03-10 | 1998-09-16 | 北京城建集团总公司混凝土分公司 | Method for preparing high-performance concrete and construction technology thereof |
| CN101182169A (en) * | 2007-11-21 | 2008-05-21 | 中铁十二局集团有限公司 | Low-grade machine-made sand hectometer-height pumping concrete |
| CN101353242A (en) * | 2008-09-16 | 2009-01-28 | 中国建筑第三工程局商品混凝土供应站成都分站 | Machine-made sand self-compaction concrete |
| CN101798207A (en) * | 2010-04-07 | 2010-08-11 | 西南科技大学 | Ready-mixed concrete with phosphorus slag powder |
-
2012
- 2012-04-01 CN CN2012100942329A patent/CN102617091A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1074426A (en) * | 1993-02-23 | 1993-07-21 | 何庆林 | Superfluid state concrete |
| CN1193002A (en) * | 1997-03-10 | 1998-09-16 | 北京城建集团总公司混凝土分公司 | Method for preparing high-performance concrete and construction technology thereof |
| CN101182169A (en) * | 2007-11-21 | 2008-05-21 | 中铁十二局集团有限公司 | Low-grade machine-made sand hectometer-height pumping concrete |
| CN101353242A (en) * | 2008-09-16 | 2009-01-28 | 中国建筑第三工程局商品混凝土供应站成都分站 | Machine-made sand self-compaction concrete |
| CN101798207A (en) * | 2010-04-07 | 2010-08-11 | 西南科技大学 | Ready-mixed concrete with phosphorus slag powder |
Non-Patent Citations (1)
| Title |
|---|
| 孙增智; 申爱琴; 胡长顺: "聚丙烯酰胺改性混凝土的微观分析", 《聚丙烯酰胺改性混凝土的微观分析》 * |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103102125A (en) * | 2013-01-25 | 2013-05-15 | 同济大学 | Manufactured sand underwater dispersion resistant concrete and preparation method thereof |
| CN103102125B (en) * | 2013-01-25 | 2014-11-05 | 同济大学 | Manufactured sand underwater dispersion resistant concrete and preparation method thereof |
| CN103232710A (en) * | 2013-05-02 | 2013-08-07 | 中国铁道科学研究院金属及化学研究所 | Emulsified asphalt for CRTS I and CRTS II slab ballastless tracks and preparation method of emulsified asphalt |
| CN103288398A (en) * | 2013-05-15 | 2013-09-11 | 宁波市高等级公路建设指挥部 | High-performance machine-made sand marine concrete and preparation method thereof |
| CN103288398B (en) * | 2013-05-15 | 2016-01-20 | 宁波市高等级公路建设指挥部 | High-performance machine-made sand marine concrete and preparation method thereof |
| CN103342522A (en) * | 2013-07-18 | 2013-10-09 | 江苏广亚建材有限公司 | Cracking resisting concrete |
| CN104150829A (en) * | 2014-08-02 | 2014-11-19 | 四川华构住宅工业有限公司 | Self-leveling concrete and application method thereof |
| CN106517967A (en) * | 2014-08-27 | 2017-03-22 | 胡妍 | Water-retention crack-resistance concrete |
| CN106517965A (en) * | 2014-08-27 | 2017-03-22 | 胡妍 | Water-retaining anti-cracking type concrete |
| CN106517964A (en) * | 2014-08-27 | 2017-03-22 | 胡妍 | Water-retention and anti-crack type concrete |
| CN106517966A (en) * | 2014-08-27 | 2017-03-22 | 胡妍 | Water retaining and crack resistant concrete |
| CN105254242A (en) * | 2015-09-28 | 2016-01-20 | 沈阳建筑大学 | C30 temperature shrinkage cracking-resistant steam-curing concrete, and preparation method thereof |
| CN105254242B (en) * | 2015-09-28 | 2017-09-05 | 沈阳建筑大学 | A kind of C30 temperature resistances contracting cracking steam-curing concrete and preparation method thereof |
| CN106116325A (en) * | 2016-06-15 | 2016-11-16 | 焦作市强耐建材有限公司 | A kind of floor heating is filled with lightweight self-leveling material and preparation method thereof |
| CN108178554A (en) * | 2017-12-04 | 2018-06-19 | 张芸 | A kind of preparation method of concrete anti-cracking agent |
| CN109455992A (en) * | 2019-01-12 | 2019-03-12 | 武汉中阳明建材有限公司 | A kind of machine-made sand concrete and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102617091A (en) | Machine-made sand self-leveling concrete | |
| CN104844099B (en) | A kind of lower shrinkage low viscosity super high strength concrete | |
| CN101269943B (en) | High-strength grout containing superfines and preparing method | |
| WO2017067411A1 (en) | Self-compacting concrete for use as crts iii slab ballastless railway track filler layer and method for preparation thereof | |
| CN105801017B (en) | Room temperature maintaining Reactive Powder Concrete and preparation method thereof | |
| CN103896527A (en) | Lightweight high-strength cement based composite material | |
| CN103011637A (en) | Bare concrete binding material and corrosion-resistant bare concrete utilizing same | |
| CN103922662A (en) | Ultra-high performance cement base composite material | |
| CN105016678A (en) | High-early-strength cement-based filling material for semi-flexible composite pavements | |
| CN103803918A (en) | Porcelain powder waste mixed cement-based tiny-expansion crack repairing mortar and using method thereof | |
| CN102153313A (en) | Concrete complex additive | |
| CN102432222A (en) | Permeable crystallization waterproof agent | |
| JP6639608B2 (en) | Highly durable mortar, highly durable concrete, and method of manufacturing high durable mortar | |
| CN103979901A (en) | A cement-based shrinkage-free grouting material doped with phosphorus slag powder and a using method thereof | |
| CN103011727B (en) | Low creep concrete | |
| CN103304206A (en) | Ultrahigh-strength self-compacting concrete and preparation method thereof | |
| CN110240450A (en) | A kind of high cracking resistance lower shrinkage high performance concrete suitable for high temperature River Valley Region | |
| KR101654568B1 (en) | Early strength type shotcrete composite | |
| Barbero-Barrera et al. | Influence of the addition of waste graphite powder on the physical and microstructural performance of hydraulic lime pastes | |
| CN106753384A (en) | A kind of sand-fixation method of the inorganic sand fixation material of degradable green | |
| CN103539414A (en) | Super-high early-strength antiseismic fireproof reinforcement material | |
| CN105174864A (en) | Weatherability polymer emulsion cement mortar and preparation method thereof | |
| Islam et al. | Sustainable high-performance, self-compacting concrete using ladle slag | |
| CN115073093A (en) | Low-shrinkage high-strength self-compacting recycled concrete and preparation method thereof | |
| CN103396060A (en) | Concrete mixture for mass concrete construction |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120801 |